CPC B63H1/28
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CPC B63H1/28 is a patent class for xyz.[1][2]
References
This wiki has 4 patents in category "CPC B63H1/28".
Patents in category CPC B63H1/28
- Patent GB-1909-26654 (English title: Improvements in Screw-propellers, Inventors: John Pursell, Filing date: 1909-11-17)
- Patent FR-1910-415236 (English title: Propeller with serrated wings for aerial and nautical propulsion, Inventors: Emmanuel Saura, Filing date: 1910-04-26)
- Patent FR-1910-420294 (English title: Propeller named "blade-turbine", Inventors: Louis-Marie Le Dantec, Supplementary to patent: Patent BE-1909-09-18 Louis-Marie Le Dantec, Filing date: 1910-09-10)
- Patent GB-1912-20317 (Inventors: Adolph Kunke Hillson, Filing date: 1912-09-06)
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